What is a sewer that runs full under gravity, flow at a pressure above the atmosphere in the sewer called?

Civil Engineering : Waste Water Engineering - Quiz(MCQ)

Siphon

Curb inlet

Flushing manhole

Inverted siphon

Correct Answer : Inverted siphon

Explanation : Inverted siphons are used to pass on obstacles such as buried pipes, subways, etc. This terminology ‘siphon’ is misnomer as there is no siphon action in the depressed sewer.

Recently Updated in Waste Water Engineering Questions

What is the growth of huge amounts of algae and other aquatic plants leading to the deterioration of the water quality called?

Algae growth

Eutrophication

Denitrification

Nitrification

Correct Answer : Option (B) : Eutrophication

Explanation : Eutrophication is the growth of huge amounts of algae and other aquatic plants leading to the deterioration of water quality. The untreated wastewater is rich in organic matter which demands oxygen.